Try all you want to change the subject. But what is happening now - and what was NOT happening before - is that children are being taken away, often screaming, from their parents at the border (or as our dumbfuck president says, the boarder).
This is a change in policy - it has squat to do with the law, so your whole premise is false - supported by Miller and Sessions.
Our government is using the pain of children to deter immigration. Splitting up families is not used to deter any other crime, ever - and illegally crossing the border is a MISDEMEANOR. And seeking asylum is NOT A CRIME AT ALL.
In other words, this has NOTHING to do with crime. These people are not MS-13 members.
Trump thinks that this - like all immigration hardline policies - will help him with his base. He might be right...because his base has lost their moral compass.
If you agree with him, then you have lost yours, too.